# physics

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Calculate the speed of an 7.6×104 kg airliner
with a kinetic energy of 1.2 × 109 J.

• physics -

.5 (7.6 * 10^4) v^2 = 1.2 * 10^9

v^2 = .3158 * 10^5
or
v^2 = 3.158 * 10^4

v = 1.78 * 10^2
or
v = 178 m/s

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